A high-safety dual-core valve for controlling the direction of discharge

Abstract

This invention discloses a high-safety dual-core valve for controlling the direction of pressure release, comprising a valve body with valve chambers at both ends on the inner side of the valve body. A first ball and a second ball are movably disposed within the inner sides of the two valve chambers, respectively. A first single-piston valve seat is movably disposed at one end of one valve chamber, and a reverse single-piston valve seat is movably disposed at the other end, with the first and reverse single-piston valve seats located on opposite sides of the first ball. This high-safety dual-core valve, by cooperating the first and second balls with the provided first, reverse, and second single-piston valve seats, double-piston valve seats, and elastic elements, can release pressure in a designated direction when the internal medium's pressure continuously increases due to factors such as temperature and the medium itself. This avoids problems such as increased pressure on the unpressurized or low-pressure side, significant economic losses, and even endangering personnel safety.

Description

Technical Field

[0001] This invention relates to the field of valves, and in particular to a highly safe dual-core valve for controlling the direction of discharge. Background Technology

[0002] In industrial fluid control systems, valves are key components, and their performance and reliability directly affect the safety, stability, and efficiency of the entire system. With the continuous advancement of valve technology and the expanding application areas, from simple water supply and drainage systems to complex industries such as petrochemicals, power generation, and pharmaceuticals, the functional requirements and performance indicators of valves are constantly increasing. Especially in space-constrained or compact equipment, traditional single-core valves can no longer meet the demands for high efficiency and integration. This has spurred the emergence and development of dual-core valve technology. Dual-core valves integrate two independent valve cores into the same valve body, optimizing spatial layout and enhancing flow control and media isolation capabilities.

[0003] While existing dual-core valves on the market have the function of automatically balancing the valve cavity pressure to the pipeline system through the force of the medium itself, this innovation has alleviated the space pressure and operational complexity to a certain extent, but there are still limitations. Especially under certain working conditions, customers often need to have clear requirements for the pressure relief direction to ensure a reasonable system pressure distribution and avoid equipment damage, production interruption, or even safety accidents caused by unexpected pressure increases on the unpressurized or low-pressure side. Therefore, how to develop a valve product that can maintain the space optimization advantages of dual-core valves and flexibly meet the specific pressure relief direction requirements has become a key problem that urgently needs to be solved in the current valve technology field.

[0004] Therefore, it is necessary to propose a highly safe dual-core valve for controlling the direction of discharge to solve the above problems. Summary of the Invention

[0005] The main objective of this invention is to provide a highly safe dual-core valve for controlling the direction of discharge, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A highly safe dual-core valve for controlling the direction of discharge includes a valve body, wherein valve chambers are provided at both ends of the inner side of the valve body, and a first ball and a second ball are respectively movably disposed inside the two valve chambers;

[0008] One valve chamber has a first single-piston valve seat movably disposed at one end and a reverse single-piston valve seat movably disposed at the other end, with the first single-piston valve seat and the reverse single-piston valve seat located on both sides of the first ball. The first single-piston valve seat and the reverse single-piston valve seat can be displaced in the direction away from the first ball. The other valve chamber has a second single-piston valve seat movably disposed at one end near the reverse single-piston valve seat and a double-piston valve seat movably disposed at one end away from the reverse single-piston valve seat. The second single-piston valve seat can be displaced in the direction away from the second ball, while the double-piston valve seat cannot be displaced to either side.

[0009] Preferably, an elastic element is provided between the outer side of one end of the first single-piston valve seat, the reverse single-piston valve seat, the second single-piston valve seat, and the inner wall of one end of the valve cavity.

[0010] Preferably, the elastic element is a spring.

[0011] Preferably, the elastic elements on the outer sides of the first single-piston valve seat and the reverse single-piston valve seat are both disposed on the side facing away from the first ball, so that the elastic elements can be compressed when the first single-piston valve seat and the reverse single-piston valve seat are displaced in the direction away from the first ball.

[0012] The elastic element on the outer side of the second single piston valve seat is located on the side opposite to the second ball, so that the elastic element can be compressed when the second single piston valve seat is displaced in the direction opposite to the second ball.

[0013] Preferably, the outer sides of the first single-piston valve seat, the reverse single-piston valve seat, the second single-piston valve seat, and the double-piston valve seat are all provided with a second mounting recess, and the inner side of the second mounting recess is provided with a graphite packing that is movably and sealingly fitted with the inner wall of the valve cavity.

[0014] Preferably, the outer sides of the first single-piston valve seat, the reverse single-piston valve seat, the second single-piston valve seat, and the double-piston valve seat are all provided with a first mounting recess, and the inner side of the first mounting recess is provided with an O-ring seal that is movably sealed to the inner wall of the valve cavity.

[0015] Preferably, the top two ends of the valve body are respectively provided with a first valve stem and a second valve stem corresponding to the first ball and the second ball, the first valve stem being used to drive the first ball to rotate, and the second valve stem being used to drive the second ball to rotate;

[0016] The bottom ends of the valve body are respectively provided with a first base frame and a second base frame corresponding to the first ball and the second ball. The bottom of the first ball is rotatably connected to the upper end of the first base frame, and the bottom of the second ball is rotatably connected to the upper end of the second base frame.

[0017] Preferably, the first valve cover, the second valve cover, the first ball, the second ball, the first single-piston valve seat, the reverse single-piston valve seat, the second single-piston valve seat, and the double-piston valve seat are all provided with corresponding channels for the passage of the medium.

[0018] Compared with the prior art, the present invention provides a highly safe dual-core valve for controlling the direction of discharge, which has the following beneficial effects:

[0019] This highly safe dual-core valve, which controls the direction of pressure release, works in conjunction with a first ball, a second ball, a first single-piston valve seat, a reverse single-piston valve seat, a second single-piston valve seat, a double-piston valve seat, and an elastic element. It can release pressure in a designated direction when the internal medium's pressure continuously increases due to factors such as temperature and the medium itself, thus avoiding problems such as increased pressure on the unpressurized or low-pressure side, significant economic losses, or even endangering personnel safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle.

[0023] In the diagram: 1. Valve body; 2. First valve cover; 3. Second valve cover; 4. First valve stem; 5. Second valve stem; 6. First base frame; 7. Second base frame; 8. Graphite packing; 9. First ball; 10. Second ball; 11. First single-piston valve seat; 12. Reverse single-piston valve seat; 13. Second single-piston valve seat; 14. Double-piston valve seat; 15. First port; 16. Second port; 17. Valve cavity; 18. Elastic element; 19. First mounting recess; 20. O-ring seal; 21. Second mounting recess; 22. Channel. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-3As shown, a high-safety dual-core valve for controlling the direction of discharge includes a valve body 1. Valve chambers 17 are provided at both ends of the inner side of the valve body 1. A first ball 9 and a second ball 10 are movably disposed inside the two valve chambers 17, respectively. A first valve cover 2 is provided at the end of the valve body 1 closest to the first ball 9, and a second valve cover 3 is provided at the end of the valve body 1 closest to the second ball 10. The end of the first valve cover 2 furthest from the valve body 1 is a first port 15, and the end of the second valve cover 3 furthest from the valve body 1 is a second port 16. A first valve stem 4 and a second valve stem 5, corresponding to the first ball 9 and the second ball 10, are respectively provided at the top two ends of the valve body 1. The first valve stem 4 drives the first ball 9 to rotate, and the second valve stem 5 drives the second ball 10 to rotate. A first base frame 6 and a second base frame 7, corresponding to the first ball 9 and the second ball 10, are respectively provided at the bottom two ends of the valve body 1. The bottom of the first ball 9 is rotatably connected to the upper end of the first base frame 6, and the bottom of the second ball 10 is rotatably connected to the upper end of the second base frame 7.

[0026] One valve chamber 17 has a first single-piston valve seat 11 movably disposed at one end of its inner side, and a reverse single-piston valve seat 12 movably disposed at the other end. The first single-piston valve seat 11 and the reverse single-piston valve seat 12 are located on both sides of the first ball 9. The first single-piston valve seat 11 and the reverse single-piston valve seat 12 can be displaced in the direction away from the first ball 9. The other valve chamber 17 has a second single-piston valve seat 13 movably disposed at one end near the reverse single-piston valve seat 12, and a double-piston valve seat 14 movably disposed at the end away from the reverse single-piston valve seat 12. The second single-piston valve seat 13 can be displaced in the direction away from the second ball 10, while the double-piston valve seat 14 cannot be displaced to either side. To facilitate reset and ensure sealing, the first single-piston valve seat 11, the reverse single-piston valve seat 12, the second single-piston valve seat 13, and the double-piston valve seat 14... An elastic element 18 is provided between the outer side of one end and the inner wall of the inner side of the valve cavity 17. The elastic element 18 is preferably a spring. The elastic elements 18 on the outer side of the first single piston valve seat 11 and the reverse single piston valve seat 12 are both located on the side away from the first ball 9. Thus, when the first single piston valve seat 11 and the reverse single piston valve seat 12 are displaced in the direction away from the first ball 9, the elastic element 18 can be compressed. The elastic element 18 on the outer side of the second single piston valve seat 13 is located on the side away from the second ball 10. Thus, when the second single piston valve seat 13 is displaced in the direction away from the second ball 10, the elastic element 18 can be compressed. The first ball 9, the second ball 10, the first single piston valve seat 11, the reverse single piston valve seat 12, the second single piston valve seat 13, and the double piston valve seat 14 are all provided with corresponding channels 22 for the passage of the medium.

[0027] To enhance sealing, a second mounting recess 21 is provided on the outer side of the first single-piston valve seat 11, the reverse single-piston valve seat 12, the second single-piston valve seat 13, and the double-piston valve seat 14. A graphite packing 8 is provided on the inner side of the second mounting recess 21 to movably seal with the inner wall of the valve cavity 17. A first mounting recess 19 is provided on the outer side of the first single-piston valve seat 11, the reverse single-piston valve seat 12, the second single-piston valve seat 13, and the double-piston valve seat 14. An O-ring 20 is provided on the inner side of the first mounting recess 19 to movably seal with the inner wall of the valve cavity 17.

[0028] In use, when the first ball 9 and the second ball 10 are both closed, if the medium enters from the first port 15, the first single-piston valve seat 11 is pre-tightened to fit against the first ball 9 through the elastic element 18, blocking the medium. If the medium enters from the second port 16, the double-piston valve seat 14 is pre-tightened to fit against the second ball 10 through the elastic element 18, blocking the medium. When there is medium in the valve chamber 17 near the second port 16, and the pressure continuously increases due to factors such as temperature and the medium itself, the valve chamber 17 near the second port 16 cannot be displaced because the right side of the second ball 10 is the channel 22 and the left side is... The second single-piston valve seat 13 can be displaced in the direction away from the second ball 10, which will release the overpressure medium in the valve chamber 17 near the second port 16 through the second single-piston valve seat 13 into the reverse single-piston valve seat 12 and the channel 22 on the second single-piston valve seat 13. At this time, the overpressure medium in the channel 22 will be released into the valve chamber 17 near the first port 15 by pushing the reverse single-piston valve seat 12. The pressure in the valve chamber 17 near the first port 15 will continue to increase, and the overpressure medium in the valve chamber 17 will be released into the channel 22 at the first port 15 by pushing the first single-piston valve seat 11.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A high-safety dual-core valve for controlling the direction of discharge, comprising a valve body (1), characterized in that: Both ends of the valve body (1) are provided with valve chambers (17), and a first ball (9) and a second ball (10) are respectively movably arranged inside the two valve chambers (17). One valve chamber (17) has a first single-piston valve seat (11) movably disposed at one end of its inner side and a reverse single-piston valve seat (12) movably disposed at the other end. The first single-piston valve seat (11) and the reverse single-piston valve seat (12) are located on both sides of the first ball (9). The first single-piston valve seat (11) and the reverse single-piston valve seat (12) can be displaced in the direction away from the first ball (9). The other valve chamber (17) has a second single-piston valve seat (13) movably disposed at one end of its inner side near the reverse single-piston valve seat (12) and a double-piston valve seat (14) movably disposed at one end away from the reverse single-piston valve seat (12). The second single-piston valve seat (13) can be displaced in the direction away from the second ball (10), while the double-piston valve seat (14) cannot be displaced to either side. An elastic element (18) is provided between the outer side of one end of the first single piston valve seat (11), the reverse single piston valve seat (12), the second single piston valve seat (13), and the inner wall of one end of the valve cavity (17). The elastic elements (18) on the outer side of the first single piston valve seat (11) and the reverse single piston valve seat (12) are both disposed on the side away from the first ball (9), so that the elastic elements (18) can be compressed when the first single piston valve seat (11) and the reverse single piston valve seat (12) are displaced in the direction away from the first ball (9). The elastic element (18) on the outside of the second single piston valve seat (13) is located on the side away from the second ball (10), so that the elastic element (18) can be compressed when the second single piston valve seat (13) is displaced in the direction away from the second ball (10). The valve body (1) is provided with a first valve cover (2) at one end near the first ball (9), and the valve body (1) is provided with a second valve cover (3) at one end near the second ball (10).

2. The high-safety dual-core valve for controlling the discharge direction according to claim 1, characterized in that: The elastic element (18) is a spring.

3. The high-safety dual-core valve for controlling the discharge direction according to claim 1, characterized in that: The outer sides of the first single-piston valve seat (11), the reverse single-piston valve seat (12), the second single-piston valve seat (13), and the double-piston valve seat (14) are all provided with a second mounting recess (21), and the inner side of the second mounting recess (21) is provided with a graphite packing (8) that is in movable sealing cooperation with the inner wall of the valve cavity (17).

4. The high-safety dual-core valve for controlling the discharge direction according to claim 1, characterized in that: The first single-piston valve seat (11), the reverse single-piston valve seat (12), the second single-piston valve seat (13), and the double-piston valve seat (14) are all provided with a first mounting recess (19) on the outside. The first mounting recess (19) is provided with an O-ring (20) that is in movable sealing cooperation with the inner wall of the valve cavity (17).

5. A high-safety dual-core valve for controlling the discharge direction according to any one of claims 1-4, characterized in that: The valve body (1) has a first valve stem (4) and a second valve stem (5) at its top two ends, corresponding to the first ball (9) and the second ball (10), respectively. The first valve stem (4) is used to drive the first ball (9) to rotate, and the second valve stem (5) is used to drive the second ball (10) to rotate. The bottom ends of the valve body (1) are respectively provided with a first base frame (6) and a second base frame (7) corresponding to the first ball (9) and the second ball (10). The bottom of the first ball (9) is rotatably connected to the upper end of the first base frame (6), and the bottom of the second ball (10) is rotatably connected to the upper end of the second base frame (7).

6. A high-safety dual-core valve for controlling the discharge direction according to claim 1, characterized in that: The first valve cover (2), the second valve cover (3), the first ball (9), the second ball (10), the first single piston valve seat (11), the reverse single piston valve seat (12), the second single piston valve seat (13), and the double piston valve seat (14) are all provided with corresponding channels (22) for the passage of the medium.

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